PLATE I. 



TYRO SARSI. ? 



Fig. 1. The animal from the side (*/\). 



» 2. » » » above (*/i)- 



» 3. The eye ( 30 / x ). 



» 4. The first pair of antennae (%). 



» 5. The last joint of the same i* ^). 



» 6. The labrum ( 70 /j). 



» 7. The left mandible ( 10 %). 



» 8. The tip of the same ( 25 %). 



» 9. The right maxilla of the first pair ( 10 %)- 



» 10. » » >j » » second . » ( 100 /i)- 



» 11. The maxillipeds, from the inside ( 70 /i). 



» 12. The first pair of pereiopoda ( I2 /i)- 



» 13. The dactylus of the same ( 42 /iJ- 



» 14. The second pair of pereiopoda ( 12 /i)- 



» 15. The dactylus of the third pair ( 60 /]). 



» 16. The seventh pair of pereiopoda ( 8 /i)- 



» 17. The dactylus of the same ( 17 /i)- 



